1dp — 1 dollar problems

Useful software.
One dollar.

We build small iOS apps that make life slightly better. Each one solves exactly one problem and costs exactly one dollar. The math checks out.

joy ÷ dollarsest. 2026
per appusd
01

Small problems deserve solving

Nobody builds an app for the seven plants you keep killing. We do. Small annoyances, taken seriously.

02

One dollar, honestly

No ads, no dark patterns, no surprise unlocks. A dollar up front — or, when something genuinely costs us money to run (AI recipes, we're looking at you), a dollar a month. Never more.

03

Joyful by default

Cheap software doesn't have to feel cheap. Every app gets the details: sound, motion, and a little wit.

The apps

Two shipped. More in the queue.

app screenshots — coming
free commissioned by mamam

Cooking Mamam

Every meal you cook is money you keep. Track your savings, earn rewards, cook with confidence.

Cat Sticker Studio's stickerbook: a grid of cat meme stickers
$1 ios · app store

Cat Sticker Studio

Point it at your cat. Get meme stickers. Science has gone far enough.

Bring your own problem

Got a one-dollar problem?

Tell our terminal. It asks follow-up questions until it actually understands, then the problem goes on the board. Others upvote it. If enough people want it solved, we build it — and you hear about it first.

#041 Tell me when the bakery downstairs restocks 312 ▲
#017 A timer that yells in my mom's voice 214 ▲
#023 Split rent that survives the weird month 168 ▲
Open the terminal
1dp problem intake · v0.4
state your problem.
my plants die because i forget them
noted. how many plants survive today?
two. formerly nine.
a 78% failure rate. would a nudge at the right moment have saved the seven?
honestly yes
good. filing as problem #052